[RESOLVED] Inserting Items to a ListView window

[boolman]

Hi
I've created a ListView window, but I can't figure out how I'm supposed to add items to it. The problem is that I can't know how many columns the ListView will contain. I'm creating the listview window and the columns like this:

    RECT Rcl;
    GetClientRect(hWnd, &Rcl); 
    
    hQuery = CreateWindowEx(WS_EX_CLIENTEDGE,
                            WC_LISTVIEW,
                            "",
                            WS_VISIBLE      |
                            WS_CHILD        |
                            WS_BORDER       |
                            LVS_REPORT      |
                            //LVS_EDITLABELS  |
                            WS_EX_CLIENTEDGE,
                            0,
                            0,
                            Rcl.right - Rcl.left,
                            Rcl.bottom - 21 - Rcl.top,
                            hWnd, 
                            (HMENU)ID_RESULT, 
                            GetModuleHandle(NULL),
                            NULL);
    
    TCHAR pText[128];
    
    lvC.mask    = LVCF_FMT | LVCF_WIDTH | LVCF_TEXT | LVCF_SUBITEM;
    lvC.fmt     = LVCFMT_LEFT;
    lvC.cx      = 100;
    lvC.pszText = pText;
    
    QueryColumns = MyBot->get_fields();
    
    int i;
    std::list<std::string>::iterator it;
    for(i = 0, it = FieldResult.begin(); i < QueryColumns; i++, it++)
    {
        lvC.iSubItem = i;
        strcpy(pText, it->c_str());
        ListView_InsertColumn(hQuery, i, &lvC);
    }

The program interacts with a MySQL database and retrieves the data that I wan't display in my ListView window from there. This also explains why I can't have static columns, different SELECT querys gives different columns.

I've been looking at msdn for a solution but I can't find anything usefull. I thought that ListView_InsertItem could help me, but couldn't get it to work. If you know any way to solve this problem, please tell me. I would greatly appreciate it.

Thanks in advance

/ boolman

[kkez]

I don't understand your question/problem. You have a problem with the items, then where's you code where you add them? What is the problem, actually?

If you see only the items in the first column, then you must know that ListView_InsertItem macro can be used only to insert items and set the first item (in the first column). Then, to insert subitems you can use ListView_SetItem() or ListView_SetItemText() (the latter if you have to set the text only)

[ovidiucucu]

Not very clear what "couldn't get it to work". From your piece of code ListView_InsertColumn have to work except it's an error in other place. That will insert the columns in your listview control (note: you have also to delete all columns before).
Furher you must step through the resultset rows.
For each row call ListView_InsertItem for the first column followed by ListView_SetItem for each subsequent column.
Below is just an example of using ListView_InsertItem and ListView_SetItem.

    LVITEM lvi;
    lvi.iItem = 0;      // row 0
    lvi.iSubItem = 0;   // column 0
    lvi.mask = LVIF_TEXT;
    lvi.pszText = .....;
    ListView_InsertItem(hQuery, &lvi);

    lvi.iSubItem = 1; // column 1
    lvi.pszText = .....;
    ListView_SetItem(hQuery, &lvi);

    lvi.iSubItem = 2; // column 2
    lvi.pszText = .....;
    ListView_SetItem(hQuery, &lvi);

... like kkez already suggested.

[boolman]

Hmm, this is a bit awkward. This piece of code should have been posted from the beginning:

// The code from my first post + the code underneath

    for(i = 0; i < RowResult.size(); i++)
    {
        for(int j = 0; j < QueryColumns; j++)
        {
            char* Text = new char[42];
            strcpy(Text, "I'm a small penguin");
            
            lvI.mask     = LVIF_TEXT;
            
            lvI.iItem    = i;
            lvI.iImage   = 0;
            lvI.iSubItem = j;
            lvI.pszText  = Text;
            
            if(!SendMessage(hQuery, (UINT)LVM_SETITEM, (WPARAM)0, (LPARAM)&lvI))
                MessageBox(hWnd, "SendMessage LVM_SETITEM failed", "D'oh!", MB_OK);
            
            delete [] Text;
        }
    }

I think that I can understand what I've done wrong now. Thank you both very much for answering me. I will try to avoid this kind of mistakes in the future.